import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

/* Layout */
import Layout from '@/layout'

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'/'el-icon-x' the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
export const constantRoutes = [
  {
    path: '/login',
    component: () => import('@/views/login/index'),
    hidden: true
  },

  {
    path: '/404',
    component: () => import('@/views/404'),
    hidden: true
  },

  {
    path: '/',
    component: Layout,
    redirect: '/dashboard',
    children: [{
      path: '/',
      name: '首页',
      component: () => import('@/views/dashboard/index'),
      meta: {title: '首页', icon: 'dashboard'}
    }]
  },
  {
    path: '/focus',
    component: Layout,
    redirect: '/focus/table',
    name: '轮播图管理',
    meta: {title: '轮播图管理', icon: 'el-icon-s-help'},
    children: [
      {
        path: 'focus',
        name: '轮播图管理',
        component: () => import('@/views/focus/index'),
        meta: {title: '轮播图管理', icon: 'table'}
      }
    ]
  },
  {
    path: '/article',
    component: Layout,
    redirect: '/article/table',
    name: '文章管理',
    meta: {title: '文章管理', icon: 'el-icon-s-help'},
    children: [
      {
        path: 'article',
        name: '文章列表',
        component: () => import('@/views/article/index'),
        meta: {title: '文章列表', icon: 'table'}
      },
      {
        path: 'edit',
        name: '写文章',
        component: () => import('@/views/article/edit'),
        meta: {title: '写文章', icon: 'table'}
      }
    ]
  },
  {
    path: '/tag',
    component: Layout,
    children: [
      {
        path: 'tag',
        name: 'tag标签',
        component: () => import('@/views/tag/index'),
        meta: {title: 'tag标签', icon: 'form'}
      }
    ]
  },
  {
    path: '/nav',
    component: Layout,
    children: [
      {
        path: 'nav',
        name: '导航栏设置',
        component: () => import('@/views/nav/index'),
        meta: {title: '导航栏设置', icon: 'form'}
      }
    ]
  },

  {
    path: '/setting',
    component: Layout,
    children: [
      {
        path: 'setting',
        name: '系统设置',
        component: () => import('@/views/setting/index'),
        meta: {title: '系统设置', icon: 'form'}
      }
    ]
  },
  // 404 page must be placed at the end !!!
  {path: '*', redirect: '/404', hidden: true}
]

const createRouter = () => new Router({
  // mode: 'history', // require service support
  scrollBehavior: () => ({y: 0}),
  routes: constantRoutes
})

const router = createRouter()

export const asyncRoutes = [
  {
    path: '/p1',
    component: Layout,
    redirect: '/p1/page',
    alwaysShow: true, // will always show the root menu
    name: 'Permission',
    meta: {
      title: 'Permission',
      icon: 'lock',
      roles: ['admin', 'editor'] // you can set roles in root nav
    },
    children: [
      {
        path: 'p2',
        component: () => import('@/views/dashboard/index'),
        name: 'PagePermission',
        meta: {
          title: 'Page Permission',
          roles: ['admin'] // or you can only set roles in sub nav
        }
      },
      {
        path: 'p3',
        component: () => import('@/views/dashboard/index'),
        name: 'DirectivePermission',
        meta: {
          title: 'Directive Permission'
          // if do not set roles, means: this page does not require permission
        }
      },
      {
        path: 'p4',
        component: () => import('@/views/dashboard/index'),
        name: 'RolePermission',
        meta: {
          title: 'Role Permission',
          roles: ['admin']
        }
      }
    ]
  },

  {
    path: '/icon',
    component: Layout,
    children: [
      {
        path: 'index',
        component: () => import('@/views/dashboard/index'),
        name: 'Icons',
        meta: {title: 'Icons', icon: 'icon', noCache: true}
      }
    ]
  }
]

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
  router.options.routes = constantRoutes
}

export default router
